1055534052781 has 16 divisors (see below), whose sum is σ = 1145364495408. Its totient is φ = 966952396800.

The previous prime is 1055534052773. The next prime is 1055534052829. The reversal of 1055534052781 is 1872504355501.

It can be written as a sum of positive squares in 8 ways, for example, as 92994502500 + 962539550281 = 304950^2 + 981091^2 .

It is not a de Polignac number, because 1055534052781 - 2³ = 1055534052773 is a prime.

It is a super-2 number, since 2×1055534052781² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055534052761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1360701 + ... + 1990621.

It is an arithmetic number, because the mean of its divisors is an integer number (71585280963).

Almost surely, 2^{1055534052781} is an apocalyptic number.

It is an amenable number.

1055534052781 is a deficient number, since it is larger than the sum of its proper divisors (89830442627).

1055534052781 is a wasteful number, since it uses less digits than its factorization.

1055534052781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630912.

The product of its (nonzero) digits is 840000, while the sum is 46.

The spelling of 1055534052781 in words is "one trillion, fifty-five billion, five hundred thirty-four million, fifty-two thousand, seven hundred eighty-one".